Device and method for measuring a rotational frequency of a movable game device

a technology of movable game devices and measuring devices, which is applied in the direction of cosmonautic components, sports apparatus, and reradiation, etc., can solve the problems of large error margin, inability to meet the requirements, and inability to achieve the effect of low cost and efficient measuremen

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a technology of movable game devices and measuring devices, which is applied in the direction of cosmonautic components, sports apparatus, and reradiation, etc., can solve the problems of large error margin, inability to meet the requirements, and inability to achieve the effect of low cost and efficient measuremen

US20070059675A1Inactive Publication Date: 2007-03-15CAIROS TECH

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[0074] To improve one's skills in a ball game or to be able to compare oneself to other players, objective data must be obtained in a simple manner. This data must be visualized such that a training feedback or a comparison to other players is possible. To this end, respective components are provided within the game device, and, if need be, a data detection device including a display unit is provided.

[0075] In a low-cost system, recognition of a person cannot be effected via delay times of the radio signals. To this end, the incoming radio signals would have to be compared to a highly accurate time reference. Also, a network would have to be built within which all times measured are compared to determine that player who is closest to the ball. Therefore, one concludes, from the transmission of a radio signal and an acoustic signal, as to who had the last ball contact.

[0076] By measuring the forces acting on the game device, one may also infer the shot force or the rotational speed...

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Abstract

For measuring the rotational frequency of a movable game device, one resorts to an existing radio signal in the form of a broadcast signal or mobile communication signal within the framework of an open system, or to a radio signal of an evaluation unit within the framework of a closed system, so as to obtain, by means of an antenna having a directivity characteristic, a time-varying radio antenna receive signal which has a low-frequency modulation portion, the frequency of which corresponding to the rotational frequency of the movable game device.

Description

CROSS-REFERENCE TO RELATED APPLICATION [0001] This application claims priority from German Patent Application No. 102005036355.5, which was filed on Jul. 29, 2005, and is incorporated herein by reference in its entirety. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to movable devices and in particular to game devices such as balls, and to concepts for measuring a rotational frequency of a movable game device. [0004] 2. Description of Prior Art [0005] For quite some time, various interest groups have wished to study and understand the sequence of movements of moving objects and / or persons, which requires an exact indication of the object's position in space and time. What is of particular interest here are, among other things, game balls, in particular in commercialized types of sport, such as footballs, or soccer balls, which are highly accelerated in three-dimensional space, as well as tennis or golf balls. The question of who wa...

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Application Information

Patent Timeline

15 Mar 2007

Publication

US20070059675A1

IPC: A63B69/00

CPC: A63B41/00; A63B43/00; A63B69/002; A63B71/0605; A63B2220/40; G01S13/862; A63B2225/30; A63B2225/50

Inventors: KUENZLER, UDO; ENGLERT, WALTER